28774011 has 16 divisors (see below), whose sum is σ = 44780544. Its totient is φ = 16091904.

The previous prime is 28774001. The next prime is 28774027. The reversal of 28774011 is 11047782.

It is not a de Polignac number, because 28774011 - 2¹⁰ = 28772987 is a prime.

It is a nialpdrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 28774011.

It is not an unprimeable number, because it can be changed into a prime (28774001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13590 + ... + 15563.

It is an arithmetic number, because the mean of its divisors is an integer number (2798784).

Almost surely, 2^28774011 is an apocalyptic number.

28774011 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

28774011 is a deficient number, since it is larger than the sum of its proper divisors (16006533).

28774011 is a wasteful number, since it uses less digits than its factorization.

28774011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29210.

The product of its (nonzero) digits is 3136, while the sum is 30.

The square root of 28774011 is about 5364.1412173805. The cubic root of 28774011 is about 306.4315432841.

The spelling of 28774011 in words is "twenty-eight million, seven hundred seventy-four thousand, eleven".